class_docstr: Feature cache manager for cache sharing between different cost models
code: def __init__(self):
      self.feature_cache = {}
  
imports: import gc
  import numpy
  from .tuner import Tuner
  from ..env import GLOBAL_SCOPE
label_desc: Use image node_id 1 to create a new FeatureCache object from inherited base classes: object with example: obj = FeatureCache()